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Sextupolar Magnets in CLIC

Sextupolar Magnets in CLIC. Rebecca Glaudell CERN REU 2013 BE-ABP-CC3 with thanks to: Rogelio Tomas Garcia Javier Barranco Garcia. rebecca@glaudell.com. CLIC is a 3 TeV e + e - compact linear collider. Lepton colliders allow for more precision in analyzation than hadron colliers.

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Sextupolar Magnets in CLIC

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  1. Sextupolar Magnets in CLIC Rebecca Glaudell CERN REU 2013 BE-ABP-CC3 with thanks to: Rogelio Tomas Garcia Javier Barranco Garcia rebecca@glaudell.com August 8, 2013

  2. CLIC is a 3 TeVe+e- compact linear collider. Lepton colliders allow for more precision in analyzation than hadron colliers. This will be the highest energy scale reached by a lepton collider. This can produce higher center of mass energy collisions for elementary particles than the LHC. http://clic-study.web.cern.ch/CLIC-Study/Layout/OverallCLIC3.html August 8, 2013

  3. The Final Focus System is part of the Beam Delivery System. The Final Focus System (FFS) consists of ~90 elements that focus the beam near the interaction point (IP). Within the FFS, there are nine sextupolar magnets that can focus a beam with energy spread. http://clic-study.web.cern.ch/CLIC-Study/Layout/OverallCLIC3.html August 8, 2013

  4. Sextupoles in the FFS can be adjusted to minimize . Sextupoles have: 9 adjustable strengths 5 adjustable positions Measure minimization of beam spread with weighted : August 8, 2013

  5. CLIC uses a rectangular beam. The ideal beam is 40 times wider than tall. Image obviously not to scale. August 8, 2013

  6. MAPCLASS2 code aides in the optimization of the CLIC lattice. Allows the user to manipulate the beamline or its transfer map. MAPCLASS2 can use a beamline generated by MAD-X PTC or generate the map directly. Runs in Python 2.6, but uses some C++ for speed. Methodical Accelerator Design-XPolymorphic Tracking Code https://cds.cern.ch/record/1491228/files/CERN-ATS-Note-2012-087-TECH.pdf? August 8, 2013

  7. Nelder-Mead Simplex Method can be used to optimize the beamline. • Choose independent variables: • Write MAPCLASS2 function for dependent variable: • Choose a starting simplex: • Calculate , , or for other orders. strength position sextupoles “Improved” Nelder-Mead Simplex Method gets stuck too easily. August 8, 2013

  8. Optimization depends on order of calculation. August 8, 2013

  9. Optimization depends on order of calculation. August 8, 2013

  10. Results August 8, 2013

  11. Results in in Comparable to the difference between fettuccine and linguine August 8, 2013

  12. Future work • Confirm improvements for higher orders • Investigate further improvements to the simplex method • Apply this method to other accelerators • Append to official set of MAPCLASS2 codes August 8, 2013

  13. Favoritepart? August 8, 2013

  14. and for optimized August 8, 2013

  15. minimized for optimized strengths August 8, 2013

  16. minimized for optimized strengths August 8, 2013

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